Well, those times weren't standards. You can't take as a reference exceptional times and think of it as the norm.
Ndombélé is one of the best players of Lyon and wanted by the biggest clubs in the world. In the other hand, Barcelona has enough quality to beat Lyon with or without Ndombélé.
Lyon like to play a game with fast transition. If you control the tempo of the game in the midifeld, you have won the game. If you don't control the tempo but you are clinical, you have won the game. If you control the tempo and you are clinical, it will be ugly.
You have Messi, Suarez and Dembélé for the clinical part to bail you out in case you put in a bad performance. I have absolutely no worries for you. They don't even have Fekir, their captain and wild card (free kick and long shot taker).